Home / 1,126,209.78-1,685,387.61-921,439.32

Finding the Fourth Proportional to 1,126,209.78, 1,685,387.61 and 921,439.32

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Solution

The fourth proportional to 1,126,209.78, 1,685,387.61 and 921,439.32 is: 1,378,945.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,209.78 : 1,685,387.61 = 921,439.32 : x
  2. Step 2: Convert to fraction form
    1,126,209.78/1,685,387.61 = 921,439.32/x
  3. Step 3: Cross multiply
    1,126,209.78x = 1,685,387.61 × 921,439.32
  4. Step 4: Simplify right side
    1,126,209.78x = 1,552,982,413,294.83
  5. Step 5: Solve for x
    x = 1,552,982,413,294.83/1,126,209.78
  6. Step 6: Final answer
    x = 1,378,945.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.